Pasteurizing holder



W. j. DAVIS.

PASTEURIZING HOLLEH.

APPLICATION HLED APR. 2e, 1919.

W. l. DAVIS.

PSTEURIZING H'OLDER. APPLICATION mw APr .21,x919. RENEWED ocA 11.1920.

vaunted Feb. 21, 192g` 4 SHEETS-SHEET 2.

C.; ,Q4/UCV? QM. 8 wf ,9, f i A@ y w. L DAVIS. PASTEURIZING HOLDER,

APFLXCATION FILED APR.ZI,1919 RENEWED OCT. 11,1920. lygjggg@ l rammed 21, 1922.

www

UNITED STATES PATENT oFEicE.

WILLIAM J. DAVIS, F CHICAGO, ILLINOIS.

PASTEUBIZING HOLDER.

Specification of Letter-s Patent. Patented Feb. 21,v 1922.

Application tiled April 21, 1919, Serial No. 291,682.v enewed October 11, 1920. Serial No. 416,292.

To all whom. t lnza/y Gomera:

Beit known that I, WILLIAM J. Davis, a citizen of the United States and a resident of Chicago, in the county of (look and State of Illinois, have invented certain new and uset'ul Improvements in Pasteurizing Holders, of which the following is a full,'clear, and exact specification. iV y My invention is concerned with holders for pasteurizing systems, and is designed primarily to produce a simple structure of the class described in which there is n0 possi-vr bility of the milk which has been held, from being contaminated by the milk just entering the holder, and consequently possibly containing live bacteria.

It is further concerned with a simple structure of the class described in which all the valve mechanism is readily accessible for cleaning and repairs.

Stated more specifically it is designed to produce a simple and cheaply manufactured construction wherein all the valve mecha.- nism is concentrated in a single, easily accessible place, without the apparatus occupying an undue amount of space, and yet to employ such a valve mechanism as prevents the possibility of the held milk as it is being discharged from coming in contact with any of the unheld milk.

It is further designed to produce a simple plural vat. structure of the class described in which all the vats can be readily placed in a single tank, and yet employ a simple .valve mechanism concentrated at a single point so that it 1s readily accessible 'for cleaning: and repairs.

-To illustrate my invention, l. annex hereto tour sheets of drawings in which Ithe same reference characters are used to designate `identical parts in all the ligures ot whichu Fig. `1 is a central vertical section substantially on the line 1-1 of Fig. 2;

Fig. 2 is a to plan View of the same;

Fig. 3 is a p an view in horizontal section on the line 3-3 of Fig. '1;

Fig. #t is a plan view on an enlarged scale as seen in section on the line 4-4 of Fig. 1;

Fig. 5 is a top plan view of the milk receiving unnels, uncovered;

Fig. 6 is a detail 1n central vertical section showing a modification of the discharge receptacle adapted for use where the milk must pe discharged from the holder at a higher eve l Fig. 7 is a detailed view similar to Fig. 6, but showing a further modification;

Fig. 8 is a detail in section on the line 8-8 of Fig. 7;

Fig. 9 is a detail of the central portion of the apparatus as seen in Fig. `l, but showing a modified construction;

Fig. l0 is an enlarged plan View on the line 10-10 of Fig. 9, but showing a modified construction of the valves;

Fig. 11 is a section as seen on the line 11-11 of Fig. 10;

Fig. 12 is a section as seen on the line 12-12 of Fig. 11; e

Fig. 13 is a plan view in section on the line 13--13 of Big. 14; and

Fig. 14 is a vertical section on the line 111-14 of Fig. 1 3, showing a novel cover for the holding vats.

In carrylng out my invention, the basis is a plurality of preferably cylindrical vats 107 which are grouped about a common center and supported by the curved T bars 11 a short distance above the bottom of. a tank 12 which is generally annular in its horizontal cross section, except that two ot the vats 10 are separated more widely than the others and the tank has the curved ends 13 which are separated widely enough, so that the operator can pass between them to get at the center of the apparatus. where the valve mechanism is all located, for the purpose of cleaning and repairs. This tank is elevated a little way above the floor by suit-- able supporting framework or brackets 14.

Thezmilk to be held comes from the pastcurizerfthrough the pipe 15 which terminates in a cock 16 discharging at the center of the apparatus into a preferably circular receptacle 17 secured upon the upper end of a vertical shaft 18 and having a single eccentrically located outlet 19. To prevent an undue amo-unt of vmilk accumulating in thei'eceptacle 17, I preferably employ a float valve 20 with atapering valve member 21 extending' upwardly from the center thereof and into theoutlet of the valve 16 so that when an exeessvof milk accumulatesy in the receptacle 17, the float 20 will be raised so that the valve 21 will close the outlet of the cock 16.` Y

Associated with this receptacle 17 is an vannular receptacle 22, concentric therewith and located partially' beneath it, and divided by the partitions y23 into as many fun?l nel compartments 24 as there are vats l0. Each of the. compartments 24 has an outlet 25 opening preferably into the pipe 26 eX- tending almost tothe bottom of the vat so 'that milk will be emptied into the bottom i Arather"than allowed to fall to the bottom l from the top of the vat.` To protect the re- .be secured to the shaft above its bearing,f

and the shaft be rotated by a worm 33 secured on the inner end of the shaii't 34 mounted in ,suitable bearings in the wall of the tank l2 and driven as desired. in any suitable manner, as by the handle or by the customary automatic mechanism which would be connected with ythe power plant in the customary manner. lVith the mechanism as thus far described, it will be obvious that if the shaft 18 is rotated at the proper speed, or rotated and stopped at the proper intervals, the vats 1G will be successively filled by the hot. niilk comin;T from the pasteurizcr (notshown), through the pipe 15.

To empty the vata` after the milk has i stood for the desired length of time. .l einploy the cocks 36, ot which there will be 'l one for each vat, connected with the bottom thereof by the short pipe 37 extending from said bottom and throughthe adjacent wall of the tank l2 by a water-tight joint f so that there will be no leakage of the water from the'tank l2. The cocks 36 are provided with the stems 3S which )iuelicrably have the Yfour radially disposed lingers which are adapted to be engaged b v' the l downwardly projecting fingers 4() of the va li'e l operating' arm 4l secured on the shaft 18.

ln the normal operation of these cocks, the arm 41 swings past the cock and engages it open it so that the contents ot the rat are discharged, and then closes it so that it can be refilled and allowed to Stand again tor the desired length of time. The loca tion of the aperture. 1&9 relative to the arm 41 willbe such that alter a vat has been emptied.. and the cock closed, the aperture .19 vwill be brought into register with the va't so as to fill it and allow it to remain lled until the arm 41 once more gets around to the opening position, which will occupy the necessary amount of time'to properly pasteurize the milk at the temperature at which it is heldl l The milk flowing from the cock 36 which happens to be open, empties into the generally funnel shaped receptacle 42, which is formed as a part of the sleeve 43 which is secured on the lower portion of the shaft 18 lwhich is preferably made of a tube, and has its lower end rotating; in the T 44 which is connected to the pipe 45 by which the pasteurized milk is led away to the coolers.

In the construction. shoivinfthe pipe 45 will deliver the milk at a lowerlevel, but in case the apparatus is to be used in a System where the pasteurized milk lhas to be .delivered at a higher level, instead of the open receptacle 42 shown in Fig. 1, I will employ the closed receptacle 42 shown in F 6 in which the cocks 36 open into said receptacle so that it cannot overflow.

`The hot water forcirculating through the pasteurizer (not shown) and then jackcting thel tank to prevent the temperature oi the milk in the tank from falli'ugrjsturnishedhy the rotary pump 46, vwhich lmay be driven by any suitable source of power as by a belt applied to the pulley 47 on the same shaft 4S as the propeller ol the pump. The pump is supplied with water vfrom the bottom ot the tank l2 by the pipe 4i), and itdelivers the water to the pipe or receptacle 50, which is provided with a noiseless steam-heater 51 to raise tbe temperature ofthe water as it passes through the'pipe 50. A thermostat element 52is located yin the pipe and may be connected withsuitable mechanism to regulate the 1valve lcontrolling the heater 5l so that the water -will always be delivered from the pipe 5() at the proper temperature. The water passes from the pipe 5() through the pipe 53 to the pasteurizer (not shown), and alter it has flowed through the pasteur izer it returns through the pipe 54 preferably to the T 55 seen in Figi' 2, which is provided with a lavo-way valve 56, which, in one position, forces 'the `hot-water to pass to the left through the pipe 57elbow 5S, pipe 59 (see Fig. 3), elbow 60, lpipe (il, running beneath the tank, tothe elbow 62, which opens into the bottom of the tank at a point remote from the outlet elbow 49, so that the` hot water in circulating through the tank will have time to deliver its heat to the water in the tank so that allfthe heat will be utilized. The level of the water in the Atank is determined by the overow pipe 63, which opens into the elbow `or pipe 49, so as to sec-ure a' constant circulation ot"V water through the tank. lVhen the temperature is such thatv very little of the heat of the water returninpr from the pasteurizer is llO ,needed to keep up the temperature in the nectcd to the passage -69 in one side tank, the valve 56 is adjusted so as to pass the return water to the right through the pipe 64 connected by the elbow 65 with the pipe 66 extending down into the overflow e 63. When the valve 56 is thus adjusted, it will be obvious that the hot water circulated through the pasteurizer is shortcircuited, as it were, yin its passage through the holder tank and delivers but a small portion of its heat to the water in said tank.

In Figs. 7 and 8, I have illustrated a further modilicatioir of the valve mechanism which can be substituted for the valve mechanism shown in Fig. 6 when the holder is used in a gravity system, and in this modified construction 'the body of thev casing 42' remains as before, but in )lace of the top imd bottom pieces, I substitute an internal cylinder 67, which is closed at the top and has the ad'acent end of the shaft 18 secured therein. Its bottom has connected therewith the tube 68, which will discharge into the T 44, in the same manner as shown in Fig. l, and the cylinder 67 has an opening thereof and beneath it the flange 70, which has the `function of the funnel-shaped member 42, seen in Fig. 1 as it is brought underneath the end of each of the valve discharge pipes as the cocks of the valves are opened.

n Figs. 9, 10, 1l and l2 'I show still another modification in which the valve 16 is connected tov a valvecasing 7l having' a number of passages 72 leading therefrom corresponding to the number of the vats l0, and each of these passagesterminates in a ipe 25 extending down into the vats -as efore. At the bottom ot each of the` vats is the pipe 36 leadinq therefrom and con- 73 in the valve casing 74; of the same general character as the vulve casing 71, except that .it is inverted and has a discharge passage 75 leading therefrom to the pipe 76 openingn into the T 44: Bot-h ot the valve casings. .71 and 74 are provided with a plurality ot valves 77 and 7 S therein `v`vhich open and close the passages 7 l and 7 El and each of the stems oil. these valves is provided With a four notched Genova stop driven disk 78 and the shalt. its" which is journaled at its upper end in the, under side of the valve casing 71 and at .its lowcrcnd in the top of the valve casing 7-1 rarriesin the plane of these Geneva stop disks 78 a pair of Geneva stop driving sleeves 7".) and y teeth 81 arranged have the pair of driftingt as shown, so that at each rotation of the shaft 18, thc sleeves 79 and actuate the valves 77 and 78 twice, first opening` them tor to fill the tank or empty it, as the case may 80, which slee ves be, and then innnediately thereafter closing or opening the same, as the case may be, 'so

a length oi time sutlicient that the valves are opened and closed at regular intervals and are held locked be tween movements.

The vats l() will be provided with the covers 67, and in so far as I have not de scribed the construction and mode of operation of this'device, it will be understood that it is constructed and operates in the usual manner.

Instead of the stationary covers 67. I pref erably employ the movable covers 82, one of which is shown in Fics. 1 3 and Ll, which covers have cylindrical sides and the open bottom, Fitting son'icwhat snugly within the vats lO and sliding up and down therein as they are filled and emptied. Where the pipes`25 are employed, a groove or recess 83 has to be placed in one side of the cover 82 to accommodate them. These covers have the. advantage that only a small amount of air which might become contaminated with germs is permitted between the. cover and the milk, and this same air is substantially retained throughout a run. so' that it soon becomes sterilined from the continued hcat to which it is subjected.

What I claim as new, and desire to secure by` Letters Patent ot thc United States s- 1. .ln a. device of the class described, the combination with a plurality ot vats grouped about a common center. ot a cock projectingl horizontally and radially from the bottom ot `each vat toward said common center, a cock operating shaft extendingr vertically through said center, means for rotating the shaft. and a common receptacle into which all the cocks emp-ty, two ot' said vats being separated so i'ar that the operator can pass between them to reach the cocks.

2. .ln a device. of the class describe-d, the combination with a plurality of vats grouped about a common center, of a cock projecting from the bottom ol each vat toward said common center. a cock operating shaft extending vertically through said center,means for rotating the shaft. and a common receptacle carried by said shaft and brought successively into register with the cocks.

3. ln a. device of the class described, the

combination with a. plurality ot vats'grouped about a common center, of a. tank containingv p from the bottom` said vets, a cock project-ing of cach vatthrough the inner wall of: the tank toward said common center, a cock f ipemting;` shaft extending vertically through said center, moans lfor rotating the shaft. and-a common receptacle into which all the cocks empty. two of the rats and the. adjacent walls of the tank being separated so 'tar that the operator can pass between them to reach the cocks.

-l-. ln a device ol; the class described. the. combination with a plurality ol vals grouped about a common center, of a tank containing said vats. a rock project-ing troni the bottoni lll) 

